Dixon STC1 Plated Steel Hose Fitting, King Combination Nipple Threaded End with Knurled Wrench Grip, 1/2" NPT Male x 1/2" Hose ID Barbed King combination nipple for low-pressure discharge or suction service Connects to a hose on one end and an NPT female connector on the other Plated steel for greater corrosion resistance than unplated steel Barbed fitting for a tight seal on hoses Knurled wrench grip for tightening the fitting